Virus on a Network example

[malawleyGH]

Hi,
I am trying to run the 'virus on a network' example. I followed the instructions closely, and the server opens and displays the sliders and windows. I hit reset and then start hitting the step button. The simulation seems to be stepping but nothing is getting displayed, the windows remain blank. Has anyone experienced this?

Here is some more information. When the browser opens, and I hit F12, I see this

Accessibility
Form elements must have labels: Element has no title attribute Element has no placeholder attribute
IDs used in ARIA and labels must be unique: Document has multiple elements referenced with ARIA with the same id attribute: fps

element must have a lang attribute: The element does not have a lang attribute ARIA input fields must have an accessible name: Element has no title attribute Compatibility A 'viewport' meta element was not specified.

Also,

runcontrol.js:171
WebSocket is already in CLOSING or CLOSED state.
runcontrol.js:171
WebSocket is already in CLOSING or CLOSED state.
runcontrol.js:171
WebSocket is already in CLOSING or CLOSED state.
runcontrol.js:171
WebSocket is already in CLOSING or CLOSED state.
runcontrol.js:171
WebSocket is already in CLOSING or CLOSED state.
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runcontrol.js:171
WebSocket is already in CLOSING or CLOSED state.

I have no idea what this means, but perhaps someone does and can tell me if this is the problem.

[rht]

Have you tried different browsers that are less ARIA restrictive than Edge?